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https://github.com/c64scene-ar/llvm-6502.git
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737c9f6005
r201608 made llvm corretly handle private globals with MachO. r201622 fixed a bug in it and r201624 and r201625 were changes for using private linkage, assuming that llvm would do the right thing. They all got reverted because r201608 introduced a crash in LTO. This patch includes a fix for that. The issue was that TargetLoweringObjectFile now has to be initialized before we can mangle names of private globals. This is trivially true during the normal codegen pipeline (the asm printer does it), but LTO has to do it manually. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201700 91177308-0d34-0410-b5e6-96231b3b80d8
70 lines
2.3 KiB
C++
70 lines
2.3 KiB
C++
//===-- llvm/IR/Mangler.h - Self-contained name mangler ---------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Unified name mangler for various backends.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TARGET_MANGLER_H
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#define LLVM_TARGET_MANGLER_H
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/Support/raw_ostream.h"
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namespace llvm {
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class DataLayout;
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class GlobalValue;
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template <typename T> class SmallVectorImpl;
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class Twine;
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class Mangler {
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public:
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enum ManglerPrefixTy {
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Default, ///< Emit default string before each symbol.
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Private, ///< Emit "private" prefix before each symbol.
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LinkerPrivate ///< Emit "linker private" prefix before each symbol.
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};
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private:
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const DataLayout *DL;
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/// AnonGlobalIDs - We need to give global values the same name every time
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/// they are mangled. This keeps track of the number we give to anonymous
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/// ones.
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///
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mutable DenseMap<const GlobalValue*, unsigned> AnonGlobalIDs;
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/// NextAnonGlobalID - This simple counter is used to unique value names.
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///
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mutable unsigned NextAnonGlobalID;
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public:
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Mangler(const DataLayout *DL) : DL(DL), NextAnonGlobalID(1) {}
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/// Print the appropriate prefix and the specified global variable's name.
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/// If the global variable doesn't have a name, this fills in a unique name
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/// for the global.
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void getNameWithPrefix(raw_ostream &OS, const GlobalValue *GV,
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bool CannotUsePrivateLabel) const;
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void getNameWithPrefix(SmallVectorImpl<char> &OutName, const GlobalValue *GV,
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bool CannotUsePrivateLabel) const;
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/// Print the appropriate prefix and the specified name as the global variable
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/// name. GVName must not be empty.
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void getNameWithPrefix(raw_ostream &OS, const Twine &GVName,
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ManglerPrefixTy PrefixTy = Mangler::Default) const;
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void getNameWithPrefix(SmallVectorImpl<char> &OutName, const Twine &GVName,
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ManglerPrefixTy PrefixTy = Mangler::Default) const;
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};
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} // End llvm namespace
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#endif // LLVM_TARGET_MANGLER_H
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